Search Results for author: Partha Pratim Roy

Found 42 papers, 8 papers with code

Efficacy of Transformer Networks for Classification of Raw EEG Data

no code implementations8 Feb 2022 Gourav Siddhad, Anmol Gupta, Debi Prosad Dogra, Partha Pratim Roy

Despite having achieved automated feature extraction in several other domains, deep learning has not yet been accomplished for EEG.

Age Estimation Classification +3

Word-level Sign Language Recognition with Multi-stream Neural Networks Focusing on Local Regions

no code implementations30 Jun 2021 Mizuki Maruyama, Shuvozit Ghose, Katsufumi Inoue, Partha Pratim Roy, Masakazu Iwamura, Michifumi Yoshioka

Thus in this work, we utilized local region images of both hands and face, along with skeletal information to capture local information and the positions of both hands relative to the body, respectively.

Sign Language Recognition

UDBNET: Unsupervised Document Binarization Network via Adversarial Game

1 code implementation14 Jul 2020 Amandeep Kumar, Shuvozit Ghose, Pinaki Nath Chowdhury, Partha Pratim Roy, Umapada Pal

In this paper, we present a novel approach towards document image binarization by introducing three-player min-max adversarial game.


Modeling Extent-of-Texture Information for Ground Terrain Recognition

1 code implementation17 Apr 2020 Shuvozit Ghose, Pinaki Nath Chowdhury, Partha Pratim Roy, Umapada Pal

Ground Terrain Recognition is a difficult task as the context information varies significantly over the regions of a ground terrain image.

Image Classification

Estimation of Linear Motion in Dense Crowd Videos using Langevin Model

no code implementations15 Apr 2019 Shreetam Behera, Debi Prosad Dogra, Malay Kumar Bandyopadhyay, Partha Pratim Roy

It has been observed that the proposed method is able to estimate and segment the linear flows in the dense crowd with better accuracy as compared to state-of-the-art techniques with substantial decrease in the computational overhead.

Decision Making Optical Flow Estimation

Can We Automate Diagrammatic Reasoning?

no code implementations13 Feb 2019 Sk. Arif Ahmed, Debi Prosad Dogra, Samarjit Kar, Partha Pratim Roy, Dilip K. Prasad

Preliminary results indicate that the domain is highly related to computer vision and pattern recognition research with several challenging avenues.

Visual Reasoning

Facial Micro-Expression Spotting and Recognition using Time Contrasted Feature with Visual Memory

no code implementations9 Feb 2019 Sauradip Nag, Ayan Kumar Bhunia, Aishik Konwer, Partha Pratim Roy

Facial micro-expressions are sudden involuntary minute muscle movements which reveal true emotions that people try to conceal.

Micro-Expression Spotting

Anomaly Detection in Road Traffic Using Visual Surveillance: A Survey

no code implementations24 Jan 2019 Santhosh Kelathodi Kumaran, Debi Prosad Dogra, Partha Pratim Roy

Computer vision has evolved in the last decade as a key technology for numerous applications replacing human supervision.

Anomaly Detection

Video Trajectory Classification and Anomaly Detection Using Hybrid CNN-VAE

3 code implementations18 Dec 2018 Santhosh Kelathodi Kumaran, Debi Prosad Dogra, Partha Pratim Roy, Adway Mitra

If such trajectories are used to understand the behavior (normal or anomalous) of moving objects, they need to be represented correctly.

Anomaly Detection Classification +2

Texture Synthesis Guided Deep Hashing for Texture Image Retrieval

no code implementations4 Nov 2018 Ayan Kumar Bhunia, Perla Sai Raj Kishore, Pranay Mukherjee, Abhirup Das, Partha Pratim Roy

In the next stage, a second network gathers the multi-scale feature representations from the TSN's intermediate layers using channel-wise attention, combines them in a progressive manner to a dense continuous representation which is finally converted into a binary hash code with the help of individual and pairwise label information.

Data Augmentation Text-Image Retrieval +2

A Deep One-Shot Network for Query-based Logo Retrieval

2 code implementations4 Nov 2018 Ayan Kumar Bhunia, Ankan Kumar Bhunia, Shuvozit Ghose, Abhirup Das, Partha Pratim Roy, Umapada Pal

Logo detection in real-world scene images is an important problem with applications in advertisement and marketing.

Object Detection One-Shot Learning

User Constrained Thumbnail Generation using Adaptive Convolutions

2 code implementations31 Oct 2018 Perla Sai Raj Kishore, Ayan Kumar Bhunia, Shuvozit Ghose, Partha Pratim Roy

We use Global Context Aggregation (GCA) and a modified Region Proposal Network (RPN) with adaptive convolutions to generate thumbnails in real time.

Region Proposal User Constrained Thumbnail Generation

Fingertip Detection and Tracking for Recognition of Air-Writing in Videos

no code implementations9 Sep 2018 Sohom Mukherjee, Arif Ahmed, Debi Prosad Dogra, Samarjit Kar, Partha Pratim Roy

Moreover, the initialization and termination of mid-air finger writing is also challenging due to the absence of any standard delimiting criterion.

Fingertip Detection Hand Detection +2

Bag-of-Visual-Words for Signature-Based Multi-Script Document Retrieval

no code implementations18 Jul 2018 Ranju Mandal, Partha Pratim Roy, Umapada Pal, Michael Blumenstein

Finally, three distance measures were used to match a query signature with the signature present in target documents for retrieval.

Temporal Unknown Incremental Clustering (TUIC) Model for Analysis of Traffic Surveillance Videos

no code implementations18 Apr 2018 Santhosh Kelathodi Kumaran, Debi Prosad Dogra, Partha Pratim Roy

Pixel motion is first detected using optical flow and a Bayesian algorithm has been applied to associate pixels belonging to similar cluster in subsequent frames.

Optical Flow Estimation

Queuing Theory Guided Intelligent Traffic Scheduling through Video Analysis using Dirichlet Process Mixture Model

no code implementations17 Mar 2018 Santhosh Kelathodi Kumaran, Debi Prosad Dogra, Partha Pratim Roy

Thus, signal duration prediction is more accurate when tested on these datasets. The method can be used for designing intelligent operator-independent traffic control systems for roadway junctions at cities and highways.

Optical Flow Estimation

Indic Handwritten Script Identification using Offline-Online Multimodal Deep Network

no code implementations23 Feb 2018 Ayan Kumar Bhunia, Subham Mukherjee, Aneeshan Sain, Ankan Kumar Bhunia, Partha Pratim Roy, Umapada Pal

In this paper, we propose a novel approach of word-level Indic script identification using only character-level data in training stage.

Word Level Font-to-Font Image Translation using Convolutional Recurrent Generative Adversarial Networks

no code implementations22 Jan 2018 Ankan Kumar Bhunia, Ayan Kumar Bhunia, Prithaj Banerjee, Aishik Konwer, Abir Bhowmick, Partha Pratim Roy, Umapada Pal

We employ a novel convolutional recurrent model architecture in the Generator that efficiently deals with the word images of arbitrary width.


Handwriting Trajectory Recovery using End-to-End Deep Encoder-Decoder Network

no code implementations22 Jan 2018 Ayan Kumar Bhunia, Abir Bhowmick, Ankan Kumar Bhunia, Aishik Konwer, Prithaj Banerjee, Partha Pratim Roy, Umapada Pal

Our encoder module consists of Convolutional LSTM network, which takes an offline character image as the input and encodes the feature sequence to a hidden representation.

Cross-language Framework for Word Recognition and Spotting of Indic Scripts

no code implementations19 Dec 2017 Ayan Kumar Bhunia, Partha Pratim Roy, Akash Mohta, Umapada Pal

This paper presents a novel cross language platform for handwritten word recognition and spotting for such low-resource scripts where training is performed with a sufficiently large dataset of an available script (considered as source script) and testing is done on other scripts (considered as target script).

Zone-based Keyword Spotting in Bangla and Devanagari Documents

no code implementations5 Dec 2017 Ayan Kumar Bhunia, Partha Pratim Roy, Umapada Pal

Also, we propose a novel feature combining foreground and background information of text line images for keyword-spotting by character filler models.

Keyword Spotting

Recognizing Gender from Human Facial Regions using Genetic Algorithm

no code implementations5 Dec 2017 Avirup Bhattacharyya, Rajkumar Saini, Partha Pratim Roy, Debi Prosad Dogra, Samarjit Kar

Next, a face image is segmented into facial regions using landmark points and features are extracted from each region.

General Classification

Signature Verification Approach using Fusion of Hybrid Texture Features

no code implementations27 Sep 2017 Ankan Kumar Bhunia, Alireza Alaei, Partha Pratim Roy

Finally, a score level classifier fusion method is used to integrate the scores obtained from the two one-class SVMs to achieve the verification score.

Local Neighborhood Intensity Pattern: A new texture feature descriptor for image retrieval

no code implementations7 Sep 2017 Prithaj Banerjee, Ayan Kumar Bhunia, Avirup Bhattacharyya, Partha Pratim Roy, Subrahmanyam Murala

The proposed method is based on the concept that neighbors of a particular pixel hold a significant amount of texture information that can be considered for efficient texture representation for CBIR.

Content-Based Image Retrieval

Word Searching in Scene Image and Video Frame in Multi-Script Scenario using Dynamic Shape Coding

no code implementations18 Aug 2017 Partha Pratim Roy, Ayan Kumar Bhunia, Avirup Bhattacharyya, Umapada Pal

To evaluate the proposed system for searching keyword from natural scene image and video frames, we have considered two popular Indic scripts such as Bangla (Bengali) and Devanagari along with English.

Frame Keyword Spotting +1

HMM-based Indic Handwritten Word Recognition using Zone Segmentation

no code implementations1 Aug 2017 Partha Pratim Roy, Ayan Kumar Bhunia, Ayan Das, Prasenjit Dey, Umapada Pal

To avoid character segmentation in such scripts, HMM-based sequence modeling has been used earlier in holistic way.

Multi-Oriented Text Detection and Verification in Video Frames and Scene Images

no code implementations22 Jul 2017 Aneeshan Sain, Ayan Kumar Bhunia, Partha Pratim Roy, Umapada Pal

Until now only a few methods have been proposed that look into curved text detection in video frames, wherein lies our novelty.

Curved Text Detection Text Classification

Date-Field Retrieval in Scene Image and Video Frames using Text Enhancement and Shape Coding

no code implementations21 Jul 2017 Partha Pratim Roy, Ayan Kumar Bhunia, Umapada Pal

We propose a line based date spotting approach using Hidden Markov Model (HMM) which is used to detect the date information in a given text.

Information Retrieval

HMM-based Writer Identification in Music Score Documents without Staff-Line Removal

no code implementations21 Jul 2017 Partha Pratim Roy, Ayan Kumar Bhunia, Umapada Pal

A novel Factor Analysis based feature selection technique is applied in sliding window features to reduce the noise appearing from staff lines which proves efficiency in writer identification performance. In our framework we have also proposed a novel score line detection approach in musical sheet using HMM.

feature selection Line Detection

Text Recognition in Scene Image and Video Frame using Color Channel Selection

no code implementations21 Jul 2017 Ayan Kumar Bhunia, Gautam Kumar, Partha Pratim Roy, R. Balasubramanian, Umapada Pal

In this paper, we present a novel approach based on color channel selection for text recognition from scene images and video frames.

Binarization Frame +1

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